Do your quote like this:
{{Quote|What the quote is|Who said it|What comic}}

If it is more than one line, do it like this:
{{Quote|line 1<br>line 2<br>line 3|Who said it|What comic}}

If it is between two or more people, do it like this:
{{Quote|What person 1 said|Who said it}}<br>
{{Quote|What person 2 said|Who said it}}<br>
{{Quote|What person 1 said again|Who said it|What comic}}